Heat dissipating device and bracket thereof

ABSTRACT

A heat dissipating device includes a heat dissipating element and a bracket. The bracket includes a first fixing portion and a second fixing portion. The first fixing portion is to fix the heating dissipating element. The second fixing portion is movably mounted to the first fixing portion. The second fixing portion is configured to fix the bracket to another apparatus to adjust a distance between the heat dissipating element and the apparatus.

BACKGROUND

1. Technical Field

The present disclosure relates to heat dissipating devices, andparticularly, to a heat dissipating device having a bracket.

2. Description of the Related Art

It is important to dissipate heat from an electronic device, such as aserver chassis or a computer chassis. One way to dissipate heat from anelectronic device is to fix a fan to a thermal sink of a centralprocessing unit (CPU). Another way is to fix a fan to an inner wall ofthe computer chassis. However, the fan needs to be fixed at a specificposition of the computer chassis causing limitations.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded, isometric view of an exemplary embodiment of aheat dissipating device, the heat dissipating device including alatching member.

FIG. 2 is an inverted, enlarged view of the latching member of FIG. 1.

FIG. 3 is an assembled, isometric view of the heat dissipating device ofFIG. 1.

FIG. 4 is an exploded, isometric view of a board and the heatdissipating device of FIG. 3.

FIG. 5 is an assembled view of the board and the heat dissipating deviceof FIG. 4.

DETAILED DESCRIPTION

Referring to FIG. 1, an exemplary embodiment of a heat dissipatingdevice 100 includes a heat dissipating element such as a fan 10 and abracket 60. The bracket 60 includes a first fixing portion 20 and asecond fixing portion 30. The fan 10 defines four fixing holes 12 infour corners of the fan 10.

The first fixing portion 20 includes a frame 22 and two screw pillars28. The frame 22 includes a bottom wall 21, a top wall 23 parallel tothe bottom wall 21, two sidewalls 24 connecting to corresponding ends ofthe bottom wall 21 and the top wall 23, and a flange 25 extending fromcorresponding sides of the bottom wall 21, the top wall 23, and thesidewalls 24 to form an annular part at a side of the first fixingportion 20. A receiving cavity 26 is bounded by the bottom wall 21, thetop wall 23, the end walls 24, and the flange 25, and configured toreceive the fan 10. An edge of the flange 25 bounds to define an opening252, corresponding to the fan 10. Two through holes 222 are defined intwo opposite corners of the flange 25. Two elongated locating grooves224 are defined in the other two opposite corners of the flange 25 withone locating groove 224 being perpendicular to the bottom wall 21. Theother locating groove 224 is parallel to the bottom wall 21. The screwpillars 28 are perpendicularly positioned under the bottom wall 21, tosupport the frame 22.

The second fixing portion 30 includes two spindle collars 34, twolatching members 36, and two screw nuts 38.

Referring to FIG. 2, each of the latching members 36 includes a screwpole 361 and a latching portion 362 positioned at a first end of thescrew pole 361. The latching portion 362 includes a plurality ofwedge-shaped elastic protrusions 364 distantly extending out from acircumference of the screw pole 361 towards a second end opposite to thefirst end of the screw pole 361. Each protrusion 364 includes twoguiding surfaces 365, 366 at a top and a bottom of the protrusion 364,respectively. The spindle collar 34 axially defines a threaded hole 342,corresponding to the corresponding screw pillar 28 and the screw pole361 of a corresponding latching member 36.

Referring to FIG. 3, in assembly, the fan 10 is received in thereceiving cavity 26 of the first fixing portion 20 and fixed in thefirst fixing portion 20 via four elastic pins 40 passing through thelocating grooves 224 and the through holes 222 of the frame 22 to engagein the fixing holes 12 of the fan 10. The screw nuts 38 fit about thescrew poles 361 of the latching members 36. The screw pillars 28 and thescrew poles 361 of the latching members 36 are engaged in thecorresponding spindle collars 34 from opposite ends of the spindlecollars 34. In other embodiments, the fan 10 with other dimensions canbe fixed in the first fixing member 20 via adjusting positions of thepins 40 in the locating grooves 224.

Referring to FIGS. 4 and 5, in use, the heat dissipating device 100 ismounted to a board 50, such as a motherboard of a computer, that definestwo through holes 52 in the vicinity of a central processing unit (CPU)(not shown) set on the board 50. A diameter of each through hole 52 issmaller than a diameter of the latching portion 362 of the correspondinglatching member 36. In other embodiments, the through holes 52 can belocated on other positions of the board 50 according to need.

The latching portions 362 of the locating members 36 are insertedthrough the through holes 52 of the board 50 to deform the protrusions364 via sidewalls bounding the through holes 52 resisting against theguiding surfaces 365 of the protrusions 364 of the latching members 36.The screw nuts 38 are adjusted to firmly resist against the board 50,therefore firmly engaging the board 50 together with the latchingportions 362 of the latching member 36.

The heat dissipating device 100 can be disengaged from the through holes52 of the board 50 via the sidewalls bounding the through holes 52resisting against the guiding surfaces 366 of the protrusions 364 of thelatching members 36 to deform the latching portions 362.

In one embodiment, a distance between the fan 10 and the board 50 can beadjusted via rotating the spindle collars 34. In other embodiments, thescrew pillars 28 and the spindle collars 34 can be omitted, and twospindle collars 34 having threaded holes 342 are mounted to the bottomwall 21 of the frame 22 to engagably fit about the screw poles 361 ofthe latching members 36. A fixing block can directly extend from thescrew pole 361 of each latching member, to replace the correspondingscrew nut 38. Accordingly, a distance between the fixing block and thelatching portion 362 is about equal to a thickness of the board 50.

It is to be understood, however, that even though numerouscharacteristics and advantages of the embodiments have been set forth inthe foregoing description, together with details of the structure andfunction of the embodiments, the disclosure is illustrative only, andchanges may be made in details, especially in matters of shape, size,and arrangement of parts within the principles of the embodiments to thefull extent indicated by the broad general meaning of the terms in whichthe appended claims are expressed.

1. A heat dissipating device, comprising: a heat dissipating element;and a bracket comprising a first fixing portion configured to fix thebracket to the heating dissipating element, and a second fixing portionconfigured to fix the bracket to an apparatus; wherein the second fixingportion is movably mounted to the first fixing portion to adjust adistance between the heat dissipating element and the apparatus, whereinthe first fixing portion further comprises a frame supported on thesecond fixing portion, to receive the heat dissipating element, theframe comprises a bottom wall, a top wall parallel to the bottom wall,two sidewalls connected corresponding ends of the bottom wall and thetop wall, and a flange extending from corresponding sides of the bottomwall, the top wall, and the sidewalls to form an annular part at a sideof the frame, and wherein a receiving cavity is bounded by the bottomwall, the top wall, the sidewalls, and the flange, to receive the heatdissipating element, the second fixing portion comprises at least onelatching member, the at least one latching member comprising a screwpole and a latching portion positioned at a first end of the screw poleconfigured to fix the second fixing portion to the apparatus, andwherein a second end opposite to the first end of the screw pole ismovably mounted to the first fixing portion.
 2. The heat dissipatingdevice of claim 1, wherein the latching portion comprises a plurality ofwedge-shaped elastic protrusions distantly extending out from acircumference of the screw pole towards the second end of the screwpole, each of the plurality of wedge-shaped elastic protrusionscomprising two guiding surfaces at a top and a bottom thereof.
 3. Theheat dissipating device of claim 1, wherein the first fixing portioncomprises at least one screw pillar being perpendicularly positionedunder the bottom wall of the frame, the second fixing portion furthercomprises at least one spindle collar, the at least one spindle collaraxially defining a threaded hole, and wherein a corresponding screwpillar and the screw pole of a corresponding latching member are movablyengaged in opposite ends of the corresponding spindle collar via thethreaded hole.
 4. The heat dissipating device of claim 3, wherein thesecond fixing portion further comprises at least one screw nut, the atleast one screw nut fitted about the screw pole of the correspondinglatching member, the at least one screw nut configured to sandwich theapparatus together with the latching portion of the at least onelatching member.
 5. The heat dissipating device of claim 1, wherein theheat dissipating element is a fan, the flange defining two through holesin two opposite corners of the flange and two elongated locating groovesin the other two opposite corners of the flange, to fix the fan to theframe.